Improvement in saw-mills



MTE

WILLIAM Gowns, or wAUs'AU, WISCONSIN.

IMPROVEMENT IN SAW-MILLS.

Specification forming part of Letters'Patent No. 134,795, dated January14, 1873.

Nature and Objects 0f the Invention My invention is for a new setworksand other arrangementsfor saw mills, whereby the work is made easy andefcient.

V1).fescript1'-ou QI the Drawingformz'ag part of this Specification.

Figure 1 is a top view of the set-works; Fig. 2, a side view of same;Fig. 3, a View of the end of a log with the dogs connected with theset-works; Fig. 4, a side view of a section of the set-pinion andgoose-neck; Fig. 5, an end viewof the set-works; Fig. 6, an adjustablehanging box for the upper saw in a rotary saw-mill; Fig. 7, anadjustable box for the saw-arbor for the lower saw. Fig. 8 is anadjustable gig and feed works.

General Description.

A is the frame-'work of an adjustable sawmill; B, the set-screw. B' isthe jack-headthese two move the log toward the saw; U, pinion on the endof screw '13. D and D' are pinions on shaft E, meshing into pinion C. Dis a loose pinion turning on the shaft E and D' is a pinion fastenedsecurely on shaft E F, a loose ratchet keyed on the hub of loose pin ionD, so that as it moves pinion D moves with it, and shaft E moves in theopposite direction; F', ratchet keyed on shaft E; G, lever with an eyein its lower end fitting on shaft E. This lever is made crotched at itslower end and straddles an indicator or gage; H', outside pawls attachedto lever G, and titting, at their lower end, into teeth on ratchets Fand F' H, inside pawls attached to lever G, and their lower end,titting'into teeth on ratchets F and F'. These outside pawls H have ahandle, L', with which to raise them, and the inside pawls H have aprojection, M', which, as pawls H' are raised and thrown back, a camprojection on H' strikes projection M and raises pawls H out of theteeth in the ratchets. I, an indicator or gage for lever G, bolted ontothe carriage side; l', holes in the indicator I for a pin with which toregulate the set; K K, graduated scale to regulate the set by; L, pin inhole I' with which to regulate the set; M, a screw-bolt working in aprojection on indicator I, with which to regulate the set; N, lever totake up the slack of the dogs after the log is dogged; O, ratchet onlever N; P, pawl workin g in ratchet O; Q, a spiral spring wound aroundshaft V, and its outer end attachedV to dog R to hold it up when loose;R, dog, with which the log is held securely when being sawed; S S, dogs;

T, indicator on the back end of the jack-head to agree with graduatedscale K K, as marked oif on the back end of said scale KK; U,

spiral spring on shaft V, one end fastened to a collar, U', on theshaft, and the other end to a pin, V', in lever N, to hold up said leverN when the dog is free from the log V, shaft in the back side of thejack-head; W, spiral spring on shaft E. One end is to be fastened to astationary box fastened to the carriage sides, not shown, and theotherendfastened to an adjustable pin, E', in wheel W. W', a hand-wheelkeyed onto shaft E; K and Y are A boxes for shaft E; Z, a goose-neckpassing under pinion C, and curving up forming a bear in g for shaft EZ', set-screw holding lever N to shaft V a, bed-plate for the lowersawmandrel; b, pillowblock on bed-plate a. for the lower saw-mandrel; c,an adjustable screw with stationary collar on leach side of lug, onbed-plate a to regulate pillow-block b; d andl d' are collar-bolts,which hold the pillow-block.y

Vsecures the hanging bed-plate to the frame above; t', an adjustablescrew for raising or lowering the upper saw; 7c, slide onwhich sets thepillow-block of the upper saw; l, the pillow-block; m, a screw-boltthrough a slot in the hanging bed g and into pillow-block l; a, ahand-wheel screw through a lug in slide k with a notch onL its end, intowhich works a pin in bed-plate g. This screw is for the purpose ofmoving slide k out and in. o, fric` tion-pulley; p, a gigfriction-pulley working on the inside of pulley o; p', feedfrictionpulley, working on the 'outer rim of pulley io; q', ascrew-shaft fastened to the under side .otthe head girtof the saw-frameand to the center girt, running parallel to the saw or at right angleswith the saw-mandrel; i", a collar on shaft q; s, a lever for workingscrewshaft g,- t, a setscrew holding lever s to setscrew shaft q; u, nuton shaft q. This nut is hollow, and shaft q runs through it. a' is thelower half of box for shaft c, with a nut in which works a screw onshaft q. c is a shaft for feed-friction pulley p',- lw, the gigfriction-pulley shaft; rv, a screw working through collar r, the end ofit working in screw on shaft q. The collar r is for the purpose oftightening up u to a' as they wear I away. y, gig and feed shaft, onwhich is fastened friction-pulley o. Friction-pulley o is madewith a rimon one side, into or under which friction-pulley p works, and on theoutside friction-pulley p' works; and as the lever s is operated back orforward this pulley o is either turned back or forward by the pulleys pand p.

rlhe operation of this saw-mill is as follows: The log being placed onthe carriage, as shown, Fig. 3;,the dog R being driven into the log, andthe lever N drawn back to take up the slack and hold the log up againstthe jackhead; the pawl P falling into ratchet o, holding it secure, theset-works are arranged as follows: The Yfigures on indicator I arepermanently lixed, graduated by eighths to each hole, so. that movingthe lever G back and forth makes a fourth of an inch, but when the pin Lis moved into another hole, I', will make another fourth of an inch, andso on till the pin is put into the last hole will make two inches,moving the lever both ways. 'hen commencing to saw the log, when canteddown set it up so as to take off the slab 5 then to set the log so as tocome out at a particular thickness and be no waste, the jaclehead is setat one of the lines on the gage K, marked 1.5, and then set pin L intothe hole 11', marked lil on the left ofthe indicator; and then to setthe log, move lever G up so as to strike the pinL and back to screw M;and for thicker stuit, set the jack-head on the lines on the right-handindicator K, marked 4, and then set the pin L in the hole I', marked andthen repeat the moving of the lever Ur four times back and forward. Thefigures above the lines on the indicator I indicate the number of timesto repeat the motion of the lever,

and the figures below the lines indicate the thickness of the stutt tobe sawed, or vice versa. The motion of the lever Gmoves loose pinion D,and carries screw B in -one direction; and when the lever is moved inthe opposite direction it moves the shaft E and pinion D' in theopposite direction, and moves screw B the same way that the loose pinionmoved it, the pawls on the lever moving the loose ratchet-wheel F in onedirection and the fixed ratchet-wheel F' in the opposite direction,constantly' setting the log up to the saw. Ihe do'ttedlines in Fig. 2show the pawls working in the opposite 'directionfronl' those drawn 5and as you set up the log toward the saw the coiled spring E' is woundup, and when the pawls are tripped this spring will throw the jack-headsback ready for another log.` The figures on the back end of the jackheadcorrespond with those on the indicator K, so that the operator can readthem, and thus facilitate the work. The feeding of the machine is doneby pulley o. To -feed up the log to the saw, the lever s is turned sothat the screw on shaft q throws pulley p' against the outside ot'pulley o; and to gig back, the lever s is reversed, and pulley p isthrown up on the inside of pulley o, and the log is gigged back; andwhen the lever s is turned just enough so that neither pulley p or p'touches the feed-pulley() the carriage will stand still.

O Mime.

I claim as my inventionl. The pinion C, gears D D', shaft E,ratchetwheel F and F', lever G, pawls II and H', all in combination,substantially as described.

2. rlhe lever G, wheel F, and pawl H, in combination with screw M, stopL, and their supporting-bar, substantially as specified.

3. The lever G, in combination with pawls II and H', provided withhandle L', projection M', and the eccentric on pawl Il, substantially asdescribed.

4. rEhe graduated scales K K and indicator I, in combination with thehead-block and operating mechanism, as shown and described.

5. rllhe lever G, indicator I, wheels F and F', and pawls H and H', incombination'with screw M substantially as described.

' A FILLIAM GOWEN.

Witnesses:

J. B. SMITH, W. M. HoRNoR.

